How To Fix X4_REST_CALL004 - Error closing connection using destination &1 subrc &2

SAP Error Message - Details

• Message type: E = Error

• Message class: X4_REST_CALL - Messages of X4 Rest Call Handler

• Message number: 004

• Message text: Error closing connection using destination &1 subrc &2

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message X4_REST_CALL004 - Error closing connection using destination &1 subrc &2 ?

  The SAP error message X4_REST_CALL004 indicates that there was an issue when trying to close a connection to a REST service using a specified destination. The message includes two parameters: &1, which represents the destination name, and &2, which indicates the return code (subrc) from the operation.
  Causes:
  
  Network Issues: There may be network connectivity problems that prevent the connection from being closed properly.
  Timeouts: The connection may have timed out, leading to an inability to close it.
  Configuration Errors: The destination configuration in the SAP system may be incorrect or incomplete.
  Resource Limitations: The system may be running out of resources (e.g., memory, file descriptors) that are needed to manage connections.
  Service Unavailability: The REST service you are trying to connect to may be down or not responding.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the network connection to the REST service is stable and operational. You can use tools like ping or traceroute to diagnose connectivity issues.
  Review Destination Configuration: Go to transaction SM59 in SAP and check the configuration of the RFC destination. Ensure that all parameters (like the URL, authentication, etc.) are correctly set.
  Increase Timeout Settings: If timeouts are an issue, consider increasing the timeout settings for the connection in the destination configuration.
  Monitor System Resources: Check the system's resource usage to ensure that it is not running out of memory or other critical resources. You can use transaction SM50 or SM66 to monitor active processes.
  Check Service Status: Verify that the REST service you are trying to connect to is up and running. You can do this by accessing the service endpoint directly through a web browser or using tools like Postman.
  Review Logs: Check the SAP application logs (transaction SLG1) for any additional error messages or warnings that might provide more context about the issue.
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that might address this specific error or provide additional troubleshooting steps.
  Documentation: Review the official SAP documentation for REST services and RFC destinations to ensure that you are following best practices for configuration and usage.
  Community Forums: Consider checking SAP Community forums or other technical forums for similar issues reported by other users and their solutions.
  
  If the problem persists after trying the above solutions, it may be beneficial to engage SAP support for further assistance.